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19725905483 = 58733604609
BaseRepresentation
bin10010010111110000…
…010110111001001011
31212220201202211020222
4102113300112321023
5310344312433413
613021214340255
71265553300344
oct222760267113
955821684228
1019725905483
118402839829
1239a61ba68b
131b2497a22b
14d51b370cb
157a6b77b08
hex497c16e4b

19725905483 has 4 divisors (see below), whose sum is σ = 19759510680. Its totient is φ = 19692300288.

The previous prime is 19725905417. The next prime is 19725905489. The reversal of 19725905483 is 38450952791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38450952791 = 76950001239.

It is a cyclic number.

It is not a de Polignac number, because 19725905483 - 224 = 19709128267 is a prime.

It is a super-2 number, since 2×197259054832 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19725905489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16801718 + ... + 16802891.

It is an arithmetic number, because the mean of its divisors is an integer number (4939877670).

Almost surely, 219725905483 is an apocalyptic number.

19725905483 is a deficient number, since it is larger than the sum of its proper divisors (33605197).

19725905483 is an equidigital number, since it uses as much as digits as its factorization.

19725905483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33605196.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 19725905483 in words is "nineteen billion, seven hundred twenty-five million, nine hundred five thousand, four hundred eighty-three".

Divisors: 1 587 33604609 19725905483